trollen



2 Sheets-Sheet l M. E. TROLLEN DESK CALENDAR Filed April 28.' 1937 July 9, 1940.

' July 9, 1940; M. E.TRo1 LEN A' y 2,207,209

DESK CALENDAR Filed April 28. 1937 2 Sheets-Sheet 2 Patented `uly 9, 1940 p Unirse starrs rarest ortica DESK CALENDAR Martin EnTrollenr, St. Paul, Minn., assigner to Brown & Bigelow, St. Paul, Minn., a corporation of Minnesota.

Application April 28, 1937, Serial No. 139,564

' o claims. (orio- 115i My invention relates toan improvement in calmy invention will be more `clearly and fully` set endars of a ltype designed to simulate a steering forth in the following specication and claims.

, Wheel of a ship, and which may be easily ad- In the drawings forming apart of my specijusted to change the date from day to day. The ficaticn: f calendar is of .the perpetual type which may be Figure l is a front elevation View of my calused from one year to another. endar. e

It is the purpose of my invention to provide a Figure 2 is a vertical section centrallyy through calendar of attractive design which may be pothe calendar on the line 2-2 ofFigure 1. 4 sitioned on a desk or table to indicate the date. Figure 3 is a fronty elevation view of the upper 1o Each day the calendar is operated to change DOYOD 0f thQCaleDdaF SUIJDOIYlStandafdfwth lo the indication and to display another dato the rotatable members removed therefrom. o

An object of my invention is to provide g Figure i is a front eleva-tion view cfa ratchet calendar operable to display each date in rolo- I arrangement acting to provide'an audible click Yas tively large size without providing arctor of the' lOtllg Portion IIIOV'GSk from One indicating l5 large diameter. It is a comparatively simp1e position into another. Y :it matter to construct a calendar having a single Figure 5 iS a Side elevati@ VBW'Of the ratchet rotatable member which is concealed'behind a member illustrated in Figure 4- lmasking plate which permits but one date to be Fule G iS BJ Year View 0f .the TOSLingv .Wheel displayed at a time. For actual use, however, mlltd Upon the Standard Of Fgure'.

the migratie disc .bearing'the 31 possible days. Figure "1 is a locking kevfor holding the wheel in a month must be of large diameter to provide ill lJlLCe Vupon the standard; v i an indication which may be seen from any di's- Figure 8 is a front elevation view of the roy tance. If the rotor is sufficiently small to prototing wheel in place upon the Standard', vthe vido a, pleasing appearance when pigioed upon a indicating mechanism being removed theredesk or table, the figures on such a single disc -frOm- Y r p5 are too Smau to be easily geen Figure is an elevation View of one indicating Y My invention embodies two separate discs, one dSC 0f my Calendar. 1

of which carries indicia for displaying the first Figure vl0 iS an elevation View of the otherinnumber of each number over 9 and provides an dcatng disc 0f my Calendar. o

opening through which a portion of a second disc Figure 1l is an elevation View of thecam by op may be displayed. The second disc lbears the means of which the calendar is'actuated. I rst 9 numbers and acts to form the second num- Figure l2 is a front elevation view of my ber of the dates indicated above 9. By utilizing calendar with the frontv masking plate removed,

two superimposed discs and providing openings illustrating the indicating discs in one position. through the first disc through which portions of Figure 13 is a view similar to Figure 12, show- 135' the second disc may be visible, I am able to proing the indicating discs in another position. l vide a calendar which requires a maximum of 1 0 My calendar A is mounted upon a base It single numerals arranged about the same. Obhaving an aperture I I in the front thereof viously, these numerals canv be approximately through which a rotatable disc yI2 may be vobseveral times the size which they would be on the served. Thedisc I2 is provided with a pivot I3 41() same size disc if 31 separate dates were formed extending through the bottom I4 of the calthereon. It is obvious that when all of the numendar A. The lbottom I4 is provided with a cir,- bers are formed .on a single disc, 22 of theSl numcumferential flange I5 which is pressed within bers necessary are comprised of two digits makthe vertical wall i6 of the base I0. The disc I2 p ing the total of 53 digits necessary in place of 10 is inclined downwardly to some extent at Il to :4.2

in my construction. extend parallel to the inner sloping wall I3 of My calendar embodies a cam arrangement the base ill. The pivot I3 terminates in a knob which operates to rotate each disc when necessary A2li which extends below the bottom I4 land which and to permit one disc to remain stationary for a may be engaged by the iingers to rotate the desired period ofV time. By this means, I am able disc l2. n j K to move the discs torindicate successive numbers .The base kI0 extends upwardly-'terminating in from l to 31 whereupon the device will automaa circular plate portion 2i having ian axis Lat a tically' start numbering they rst of they next slight angle with the horizontal. The plate-pormonth.` tion 2I comprises an annular lange 22 and acen '55 `These and other objects and novel features of tral squareshank 23 extending axially from the 55 Y j surface thereof. A circular shoulder 24 extends slightly forward from the service of the plate portion 2 I, and between this shoulder 24 and the annular flange 22, I provide a series of radially extending notches 25 forming a ratchet.

The rotatable member mounted upon the shank 23 is designed to simulate a ships wheel. This wheel 26 is provided with a series of radially extending spokes 21 spaced at intervals about the periphery thereof, by means of which the wheel 26 may be rotated. The rear surface 29 of the wheel 26 is provided with a series of ratchet teeth 36 arranged in a circle, which teeth are similar to and of equal diameter to the ratchet teeth 25 in the standard lll. Interposed between the teeth 25 and 36, I provide a disc 3| having a pair of spring ratchet lingers 32 and 33 cut from the body thereof as illustrated in Figures 4 and 5. The finger 32 engages the ratchet teeth or notches 36 on the wheel 26. The fingers 32 and 33y permit the wheel to rotate in either direction and provide an audible click each time the wheel passes through a predetermined angular distance necessary to change the calendar from one indication to another.

The wheel 26 is provided with a central opening 34 of just suicient size to ilt over the shoulder 24 on the standard i6 as illustrated in Figure 2 of the drawings. The wheel 26 may thus rotate freely with respect to the standard and each time the wheel rotates through a certain predetermined angularity, a click is heard indicating that the calendar is in indicating position. In the modification shown, the circle is divided into 1l parts, and each time the wheel is turned 1/1;L of a rotation, a click is heard. The wheel 26 is held in position by means of a locking key 35 which engages in a slot extending partially around the square shank 26 on the inside of the wheel. The locking key 35 engages against the inner surface of the wheel 26, holding this wheel in proper position upon the shoulder 24.

An indicating disc 36 is rotatably mounted upon the square shank 23 adjacent the locking key 35. The disc 36 illustrated in Figure 9, is provided with a circular opening 31 in the center thereof, to permit the rotation of this disc upon the square shaft. A pin 39 extends outwardly from the inner surface of the wheel 26, and engages in a notch 46 in the periphery of the disc 36. 'Ihe pin 39 is just suciently long to engage the disc 36 withoutinterfering with the operation of the outer indicating disc which will be later described. Engagement of the pin 39 in the slot 40, causes the disc 36 to rotate with the wheel 26 at all times, so that every time the wheel 26 is turned, the disc 36 also turns the same dis'- tance.

The outer indicating disc 4| illustra-ted in Figure 10 of the drawings, is supported on the shank 23 and is held in spaced relation with the disc 36 by a pair' of spacing washers 42. The disc 4| like the disc 36 is provided with a central circular opening 43 so that this disc may also rotate upon the square shank 23. The disc 4|, however, only rotates at intervals as will be described. The outer periphery of the disc 4| is provided with a series of notches 44 and also with a notch 45. The major' portion of the periphery of the disc 4| is at a constant radius from the center o-f the disc. On either side of the notch 45, however, is a portion extending beyond the radius of the remainder ofthe disc. These portions of greater radius are designated as 46 and 41.

Four openings are provided'` through the disc 4|. Adjacent one opening 49, the disc isentirely blank and without any indicia. Adjacent a second opening 56, I provide a numeral 1 indicated at 5|. Adjacent a third opening 52. I provide a numeral 2 designated at 53.V Adjacent the fourth opening 54, I provide a numeral 3 designated at 55. Between the openings 49 and 54, I provide the numerals 3| indicated at 56.

Externally of the disc 4|, I provide a locking key 51 similar to the locking key 35 illustrated in Figure 7; This locking key 51 extends in a slot in the square shank 23 and holds the discs 36 and 4| and the various spacing washers in proper relative position on the shank.

On the shank 23 adjacent the locking key 51, I provide a .cam '59. The cam 59 is provided with a section 66 which in the present case equals 2(11 of the distance about the cam. A notch 6| slightly deeper than the section 69 and separated therefrom by a slight hump 62, is provided at one end of the section 66. A second section 63 of slightly greater radius than the section 6U and equal in length to 3&1 of the distance about kthe circumference of the cam, is provided adjacent the section 66 and connected therewith by a slight incline 64. The remaining V11 of the cam isof constant radius which is slightly greater than the radius of the section 63. This last named section is designated 65 on the drawings. 'Ihe cam 59 is provided with a square central opening to tabout the shank 23, to prevent rotation of the cam 59. An opening 61 in the cam 59 permits portions of the discs 36 and 4| to be viewed therethrough.

A masking plate 69 illustrated only in Figures l and 2 of the drawings, completes the assembly. 'I'he masking plate 69 fits closely within the rim 16 of the wheel 26 and conceals the inner mechanism. The masking plate 69 is provided with a square central opening 1| to nt the shank 23, and is held from rotation with respect to the shank and standard. Two spaced openings 12 are provided in the masking plate 69 which openings register with the opening 61 in the cam 59 to provide a view' of the indicating discs 4| and 36. The masking plate 69 is held in place by a washer 13 and the bolt 14 which is threaded into the square shank 23,

A flat spring 15 is secured by rivets 16 or other suitable means within the wheel 26. This spring 16 is provided with a rounded end 11 which provides a means of rotating the disc 4| at intervals.

In the operation of myvdevice, we will. start with the calendar in the position illustrated in Figure 1 of the drawings, with the numeral being displayed through the masking plate 69. This numeral is the numeral on the disc 36 and is seen through theopening 49, through the opening 61 in the cam 59, and through one ofthe openings 12 As the opening 49 isprovided with a blank surface adjacent the same, no numeral will be indicated through the other opening 12 in the masking plate 69.

Upon the second day of the month, one of the handles or spokes 21 is engaged, and the wheel 26 is rotated through 1/11 of a rotation` This action also rotates the disc 36 through lil rotation causing the numeral 2 indicated on the disc 36 to appear through the opening 49 in place of the numeral 1.v During this time, the spring 15 is in the lapproximate position illustrated in Figure 13, the rounded end 11 thereof engaging the portion 63 of the cam. While the spring 15 is suiiiciently wide to engage both the cam 59 and thes'disc v4| at the same time, the section 63 is of slightly greater diameter than the major. portion of the disc 4l., and accordingly the disc 4I will not be rotated.

`The wheel 2B may be rotated for the first Aeight days of. the month without actuating the disc 4I in any way. During this time, the spring I5 will slide over the section 63 of the earn 59, and then over of the section 55 of the cam. Upon turning the wheel 2B to indicate the ninth day of the month, the spring 'i5 slides over the remaining 1/6. of the section 65 and drops into the section 55 of the cam 59. As this section 56 is of smaller radius than'the disc 4I, the rounded end TI of the spring 'l5 will drop into a notch dii in this disc 4L In turning the wheel 25 to cause indication of the numeral lll, the spring "I5 engaged in a notch A4 will cause rotation of Vthe disc 4I as Well as the disc 36. In turning from the numeral 9 to display of the numeral 10, it is necessary to rotate the wheel 25 through 2711 of a rotation which brings the opening in registry with one of the openings '12, while the numeral 1 on the disc l designated at 5| in the drawings, will be in registry with the other opening 72. It will be found that further rotation of the wheel 26 will cause the spring l5 to en'- gage the inclined portion 56 of the cam 59, disengaging the end 17 of the spring l5 from the notch 44 and permitting the rotation of the wheel 25 through the remaining W11 of a rotation without engaging the disc 4l to further rotate the same. The position of the spring 'l5 when the calendar is displaying the eleventh day rof the month is illustrated in Figure 13.

Upon the nineteenth day of the month, the calendar is rotated through the last portion of its engagement with the section of the cam 55, and the end 'i7 of the spring l5 will engage in the next succeeding notch 4d. In turning the calendar from indication of the nineteenth day to the twentieth day of the month, the wheel 25 must again be rotated through 3/11 of a rotation while the spring 75 engages in the notch 44. This moves the opening 52 into registry With one of the openings 12, while the numeral 2 indicated at 53v is visible through the other opening 12. The disc 38 is simultaneously rotated so that the zero appearing thereon is visible through the opening 52. Further rotation of the wheel 25 causes the end 'l2 of the spring 15 to engage the inclined portion 64 of the cam 59, disengaging the spring from the notch 44 and permitting the remaining 5% 1 of the rotation to indicate successive numbers through the opening 52 without changing the position of the disc 4I.

Upon the twenty-ninth day of the month, the end 'il' of the spring I5 engages in the notch 45 of the disc 4|. In changing to the thirtiethday of the month, it is necessary to rotate the wheel 25 through 3/11 of a rotation. This movement causes rotation of the disc BI together with the disc 35, and moves the opening 54 into registry with one of the openings 12, and the numeral 3 indicated at 55 into registry with the other of the openings 72. The numeral zero indicated on the disc 35, will appear through the opening 54 so that the date 30 will be displayed through the masking plate 59. Continued movement of the wheel 25 to cause display of the numeral 31, causes the end 'il of the spring 'l5 to engage the incline Sli and to ride along the cam through the section 63. It will be remembered, however, that adjacent the notch 45, the disc 4I is of greater radius than throughout the remainder of the disc. Accordingly, the movement of the spring end l1 on to the section 63 of the cam does not disengage the spring from the notch 45.

Accordingly, continued movement of the Wheel 2B through the next 3/11 of a rotationracts to move the numerals 31 indicated at 56, the registry 'L vsary'to rotate the wheel 26 through V11 of a rotation, while the spring l5 rides upon the section 55 of the cam during which time the disc 4| does not rotate. At the end of fi/ll of a rotation, the spring "l5 engages a notch li in the disc 5l, and during the next 2/11 rotation, the disc Il! is rotated so that the opening 49 moves into registry with one of the openings l2 and the numeral zero on the disc 36 appears through the opening 49. Further rotation of the wheel 26 through-lm of a revolution, disengages the spring l5 from the notch M and moves the numeral 1 on the disc 35 into registry with the opening #i9 on the disc 4l. The calendar is then in readiness for the next month. At the rst of each month, the knob 25 is engaged by the ngers and rotated l/z of a revolution as the names of tl various months are indicated on the disc I2, movement oi this disc will move the name of the next succeeding month into registry with the vdisplay opening ll' and the standard I0.

'In accordance with the patent statutes, I have described the principles of operation of my calendar, and while I have endeavored to set forth the best embodiment thereof, I desire tol have it understood that this is only illustrative of a means of carrying out my invention and that obvious changes may be made Within the scope of the following claimswithout departing from the spirit of my invention.

I claim:

1. A calendar comprising a standard, a wheel rotatable upon said standard forming a calendar body, rotatable disc means on said standard withiin said wheel rotatable relative to said Wheel, but actuated by movement of said wheel, and masking plate means within said wheel and held stationary by said standard, said plate having an aperture therein through which a portion of said disc means is displayed.

2. A calendar comprising a standard, a rotatable wheel thereon forming a calendar body and having a recess therein, rotatable disc meanson said standard within said Wheel rotatable relative to said wheel, but actuated by rotation of said wheel to rotate, a masking closure for said wheel recess having an aperture therein through which a portion of said disc means is displayed, means supporting said closure non-rotatably on said standard, and indicia on said disc means visible through said aperture.

3. A calendar comprising a base, a rotatable wheel thereupon, a plurality of' relatively rotatable disc means bearing angularly spaced calendar indicia mounted on said base within said Wheel, means operable withsaid wheel to rotate said disc means by rotation of said wheel, aperture means in the outermost of said discs through which the innermost disc may be viewed, and stationary masking means secured to said base and extending over said disc means Within said wheel displaying a selected portion of said disc means.

4. A calendar comprising a base, a Wheel rotatable upon said base, a disc rotatably supported within said wheel and rotatable together with said wheel, a second disc having angularly spaced openings therethrough rotatably supported concentrically with said first disc, means on said wheel for rotating said second disc through a predetermined angularity with said wheel during each rotation of said wheel.

5. A calendar comprising a base, a hollow wheel rotatable on said base, a masking plate having an opening therethrough supported non-rotatably on said base positioned to act as a closure for said hollow wheel, a disc within said wheel rotatable with said wheel, a second disc having angularly spaced openings therethrough rotatably mounted within said wheel between said rst disc and said masking plate, means within said wheel engaging said second disc during a portion of each rotation of said wheel to move said second disc from one position where one opening through said second disc registers with the opening in said masking plate to another position where another opening in said second disc registers with said masking plate opening.

6. A calendar comprising a base, a wheel having a recess in one side thereof rotatably supported on said base, a disc bearing numerals from zero to nine angularly spaced thereon, a second disc bearing angularly spaced numerals from one to three thereon, said numerals each having an opening through said second disc adjacent the same through which a numeral on said i'irst disc may be displayed, said second disc having also an opening therethrough adjacent a blank portion thereof, a masking plate closingv said wheel recess containing a recess through which a portion of said discs may be displayed, and means for rotating said second disc with said wheel during a portion of the rotation thereof, permitting the numerals Zero through nine on said irst disc to be displayed through said masking plate opening and said last named opening in said second disc, said numerals zero through nine to be subsequently displayed through the opening in said second disc adjacent the numeral one on said second disc to display numbers ten through nineteen by rotation of said wheel, and to similarly display subsequent numbers indicating days of the month through continued rotation of said wheel.

.'7. A calendar comprising'a base', a wheel having a concentric recess in one side thereof rotatable on said base, means in said wheel and rotatable therewith having angularly spaced numerals thereon, a second disc rotatable with relation to said wheel mounted within said wheel having openings therethrough through which a portion of said numerals may be displayed, numerals on said second disc adjacent some of said openings providing indicia cooperable with the indicia on said iirst disc, and means on said Wheel yengageable with said second disc to rotate the same a predetermined amount during each rotation oi said wheel, and a masking plate covering said recess having an aperture through which a portion of said discs may be displayed, rotation of said wheel causing indication through the masking plate openings of numerals one through thirty-one.

S. A calendar comprising a base, a rotatable member having a recess in one side thereof on said base, a disc bearing a set of angularly spaced numerals arranged within said recess and rotatable therewith, a second disc having angularly spaced openings therethrough within said recess, cam means mounted in said recess adjacent said second disc, means on said rotatable member engageable with and rotatable over said cam, and controlled by said cam to contact with said second disc for a certain period of rotation of said member to rotate said second disc at intervals.

9. A calendar including a base, a member rotatably mounted thereon having a recess therein, a masking plate closing said recess and having a sight aperture therein, means bearing angularly spaced numerals in said recess rotatable with said member to be consecutively displayed through said aperture, a disc rotatable in said aperture and covering said numerals, spaced openings in said disc through which said numerals may be seen, indicia adjacent some of said openings cooperable with said numerals, a cam stationarily mounted in said recess, and means on and rotatable with said member engaging said cam and controlled thereby to move said disc with said member during a predetermined angular distance during each revolution of said member.

MARTIN E. TROLLEN. 

